Defensive end Ben Bass (79) gets looked at by trainers during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. Bass walked off the field before the end of practice on his own power. (Kin Man Hui/San Antonio Express-News) less

Defensive end Ben Bass (79) gets looked at by trainers during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. Bass walked off the field before the end of ... more

Defensive end Ben Bass (79) walks off the field before the end of practice after being looked at by trainers at his left ankle during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man Hui/San Antonio Express-News) less

Defensive end Ben Bass (79) walks off the field before the end of practice after being looked at by trainers at his left ankle during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, ... more

Photo: Kin Man Hui, San Antonio Express-News

Defensive end Ben Bass (79) walks off the field before the end of... Photo-4968574.67119 - San Antonio Express-News

Safety J.J. Wilcox during the afternoon session of the 2013 Dallas... Photo-4968583.67119 - San Antonio Express-News

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Special teams coach Rich Bisaccia throws the ball to one of his punters during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man Hui/San Antonio Express-News) less

Special teams coach Rich Bisaccia throws the ball to one of his punters during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man Hui/San Antonio ... more

Photo: Kin Man Hui, San Antonio Express-News

Special teams coach Rich Bisaccia throws the ball to one of his... Photo-4968584.67119 - San Antonio Express-News

Offensive coordinator Bill Callahan (left) goes over a play with quarterback Tony Romo (09) during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man Hui/San Antonio Express-News) less

Offensive coordinator Bill Callahan (left) goes over a play with quarterback Tony Romo (09) during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man ... more

Tight end Dante Rosario (80) gets pushed out after a catch during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man Hui/San Antonio Express-News)

Tight end Dante Rosario (80) gets pushed out after a catch during the afternoon session of the 2013 Dallas Cowboys training camp on Friday, July 26, 2013 in Oxnard. (Kin Man Hui/San Antonio Express-News)